Attachment for boilers.



PATENTED JUNE 16, 1903.

G. L. PAGENHRT. ATTACHMENT PoR BOTLBRS.

APPLICATION ,FILED MAY 5, 1902.

No MODEL.

I sns ,woroumn..w^snmaron n c UNITED STATES Patented June 16, 1903.

PATENT OEEICE.

CHARLES L. PAGENHART, OF WAYNESBORO, GEORGIA, ASSIGNOR OF FOUR- FIFTHSTO PHIL P. JOHNSTON, LEWIS R. FORD, WILLIAM II. DAVIS, AND

WILLIAM H. WALTERS, OF WAYNESBORO, GEORGIA.

ATTACHMENT FOR BOILERS.

LPECIFICATION forming part of Letters Patent No. 731,213, dated June 16,1903. Application filed May 5, 1902. Serial No. 105,943. (No model.)

To @ZZ whom, it may concern,.-

Be it known that I, CHARLES L. PAGEN- HART, a citizen of the UnitedStates, residing at Waynesboro, in the county of Burke and State ofGeorgia, have invented certain new and usefullrnprovements inAttachments for Boilers; and Ido declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in 1o the art to which it appertains to make and use thesame, reference vbeing had to the aocompauying drawing, and to thefigures of reference marked thereon, which form a part of thisspecification.

boilers; and the object is to provide means for automatically regulatingthe supply ofV water thereto and to associate with said water-regulatingmeans mechanism by which zo the supply of fuel to the burner isautomatically cut off. In most forms of automatic regulators of thistype the mechanisms for sustaining the valves and operating the samehavebeen located in a separate tank from the boiler especially designed forthe purpose, so

that when the level of the Water varied by reason of the tank in whichthe mechanism is located being tilted or in a different plane from thatof the boiler the operating mechanism is rendered inoperative; but thepresent invention comprises a mechanism involving a minimum number ofparts so located and related as to insure an accurate and positiveoperation at all times.

Vith these and other objects in View the invention consists in providinga central chamber in the boiler, in which is located the operating partsto control the valves, and by such construction any tilting ordeviation.

4o from a true horizontal position of the boiler will not aect theoperation of the parts.

My device is more particularly adapted for use-on boilers forautomobiles, by which the .boiler is often displaced from the truehorizontal position by irregularities in the roadbed or by ascending ordescending a hill.

The invention further consists in the construction, combination, andarrangement of parts, as will be more fully described herein- 5o after,illustrated in the accompanying drawing, and finally pointed out in theclaims.

My invent-ion relates to an attachmentfor modification Withoutvdepartingfrom the principles of my invention or sacrificing any of the advantagesthereof.

Referring to the drawing, l designates the Vouter cylindrical shell of atubular boiler, 2 the top thereof, and 3 the base, which is riveted tothe side pieces l, as shown. The boiler is provided with a series offire-tubes 4 and a central annular chamber 5. In this annular chamber'5, is fitted a cylindrical casing 6, having a crown-plate 7 near thebottom and connected with the base by stay-bolts S. The crown-plate andstay-bolts strengthen or brace the bottom of the boiler around theannular chamber'. The walls of the casing 6 are provided with a seriesof apertures 9 to permit the free circulation of Water and steam intothe centrally-located cylinder.

Within the'casing 6 is mounted a metal Iioat 1Q, having an arm llpivotally connected with a fulcrumed arm 12,'which is pivoted to asuitable ear I3, extending from the interior of the wall of thecylinder. Pivotally connected to the fulcrum-arm is a vertical reachbar14, having a jointed connection with a balance-valve 15, reciprocallymounted in the valve-casing 16, supported from the head 17 by means ofan extension 1S, which constitutes a supply-pipe for the steam. Thispipe 18 supplies steam to a feed-pump. (Not shown.) The valve-casing isprovided with two valveseats 19 and 19, the former on the interior ofthe casing and the latter on the exterior. Each of these valve-seats isadapted to receive wing-valves 2O and 20, connected by a suitable stem2l, and through' the wing of the upper valve 20' is a transverse pin 22to limit the downward movement of the valve.

It is deemed advisable. in the practical construction to make the lowerWing-valve 20L a little larger than the upper valve, so that the weightof the fulcrumed arm, reach-bar, and iioat will compensate for theincreased eXterior pressure on the said valve 20. In connec- IOO - Thissafety device is also operated by the centrally-located float, andconsists of a balance-valve 23, having a transverse opening to registerwith the ports. 24 and 24 in the valve-casing 26. The valve-stem 27 isconnected to the arm 12 bya flexible connection 28, which is normallyslack, as shown.

The valve-stem 27 is provided with a milled collar 29, by which thebalance-valve 23 isl reset and suitable packings 31 and 30 are arrangedon the boiler-head and the valve-casing 26.

32 designates a gasolene-supply ,pipe fitted in the valve-casingandconnectedin the usual way to a burner. (Not shown.) By the use of abalance-valve the pressure of gasolene on each end thereof is equalizedwhen the burner is being supplied; but the weight of the float willovercome the pressure and draw the valve down when the Water-leveldescends.

The operation of the device is as follows: The Ynormal water-level isindicated by the dotted line 25, and when the water falls below thislevel the oat will descend with the water and cause both valves 20 and2On to open, which will immediately permit the steam to enter theextension 18, which is connected with a pu mp or other Water-feed. (Notshown.) This will supply the pump with sufficient steam to cause it tooperate to deliver the water to any suitable ,point in the boiler, andthereby permit the Water-level to again assume its normal height, whichwill cause the ioat vto rise and close the balance-valve and cut off thesteam-supply to the pump or other water-feed. Now should the Water inthe tank be exhausted or the pump for any reason be rendered inoperativethe waterlevel Will continue to fall and the float will thereupon drawthe iexible connection 28 taut, pull the valve 23 down and cut off thesupply of gasolene to the burner beneath the boiler. (Not shown.) Bymeans of the iiexible connection the balance-valve 23 is not'affecteduntil the water in the supply-tank is exhausted, so that thesteam-supplying valve operatesindependeutlyof the fuel-controllingvalve. Thus it will be seen that the operation is automatic, that bylocating the float in a central chamber the Water will always have adirect action thereon and operate the valves, and that the tilting ofthe boiler, caused by irregularities in the road, will not destroy theaccurate operation of theparts.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. ln a device of the class described, a boiler having acentrally-located chamber, and means in the chamber to automaticallymaintain a uniform quantity of Water in the boiler.

2. In a device of the class described, a boiler having acentrally-located chamber, and an automaticallyoperated valve and valvemechanism in said chamber to maintain a uniform quantity of water in theboiler.

3. In a device of the class described, a boiler having acentrally-located chamber, a valve mounted in said chamber, a iioat inthe chamber connected to and adapted to operate the valve whereby theboiler is kept supplied with water at a uniform height.

4t. Inl a device of the class described, a boiler having a centrallylocated vertical chamber, said central chamber having a valve and a oatto automatically operate said valve, whereby the tilting of the boilerdoes not affect the operation of the valve.

5. In an attachment for boilers, the combination with the boiler havinga centrally-located vertical chamber, of a cylindrical casing mountedWithin said chamber and having a crown-plate and stay-bolts to brace thebottom of the boiler around said chamber and an automatically-operatedfloat-valve mounted in the cylindrical casing to maintain a uniformquantity of water in the boiler.

6. In a device of the class described, the combination with theboilerhaving a cylindrical casing centrally disposed therein andprovided with a plurality of apertures, of a steam-outlet pipe supportedfrom the head and terminating in a valve-casing, a balancevalve mountedin the valve-casing, a oat fulcrumed to the cylindrical casing, and areach-bar connecting the float and valve.

7. In a device of the class described, a boiler having acentrally-located chamber, means in the chamber to maintain a uniformquantity of water, and means to automatically cut off the supply offuel.

8. The combination of a boiler having a steam-valve and operatin gmechanism located in a centrall chamber therein, means to support andsustain said valve-operating mechanism in said central chamber, and afuelsupply valve connected to the steam-valveoperating mechanism andadapted to be operated independently of the steam-valve.

9. In a device for controlling the supplyof water to a boiler and forcontrolling the supply of fuel to theburner, comprising a centralchamber, a steam-valve supported in the chamber, a float to operate saidvalve located in the central chamber, a valve in the fuelpipe, and aflexible connection between said Valve and the float, wherebythesteam-valve is operated before the fuel-Valve.

In testimony whereof I affix my signature- .in presence of twoWitnesses.

CHARLES L. PAGENHART.

Witnesses:

PHIL P. JOHNSTON, L. M. GoTwALD.

IOD

ITO

